Mounting for paper rollers of copying machines



Jan. 15,' 1924. 1 .4Aso,9z7 Y I R. BERGER MOUNTING FOR PAPER ROLLERS 0F CPYING'y MACHINES Filled Feb.' 25 1923 Patented Jan. l5, 1924.

RICHARD BERGER, OF BONN-ON-THE-EHINE, GERMANYfASSIGNORfTO THE FIRM Y F; SOENNECKEN, OF BONN-ON-THE-RHINE, GERMN'Y.

MOUNTING non rnrnn nonnnns or COPYING MACHINES. i

Application fuea Februar-yes, 192s. saranno. 621,489@

To whom t may concer/n:

Be it known that l, RICHARD BERGER, aA

citizen of Germany, and a resident of Bonnon-the-Rhine, Germany, have invented vcertain new and useful Improvements in Mountings for Paper Rollers of Copying Machines, ofwhiehthe following is a'specication.

The object of the present invention is to provide an improved mountingrfor the paper-supporting rollers of copying machines, with the object of permitting the mounting to be Vusedwith only a particular construction of copying paper roller and thus preventing the use of paper rolls other than those for which the machine is intended and whichv might be detrimental to efficient operation of the copying machine.

Various methods of mounting the paper roll, with the aforesaid object in view, have already been proposed, but such mountings have been complicated, thus increasing the cost of the machine. They were also generally very inconvenient to manipulate so that difiiculty was experienced in fitting the paper roller in correct position in the machine. This diliiculty was also accentuated when the machine was used with different paper rolls, diering either in size or in colour. Some of the previously known mountings were so constructed that once the paper-supporting roller was mounted in the machine,.it could not be removed.

without destroying the spool or core of the paper roll.

rl`he present Vinvention provides a very simple and reliable mounting such that no difculty is experienced in litting'or removing the paper roll. l

According to the present invention the paper-supporting roller has a hollow end and a plurality of bayonet slots therein engaged by projections on a plug axially spring-controlled and rotatably mounted. rEhe plug fits in the hollow end of the papersupporting roller and is coupled thereto by sliding the plug into the hollow end of the paper roller and thereupon giving the plug a slight turn.

In order that the invention may be more clearly understood, reference is hereinafter made to the accompanying drawings illustrating one construction of my improved nicuntlng. f

Fig. l shows the mountinginvertical sec-l tion, and

Fig. 2 is a Y perspective end Yviewfof the paper roller. Y l

rlhe paper a iswound upon a paperfsup'- porting roller o which 'may' consist of a pasteboard tube, in one end of which a plurality of slots are provided. On the draw;`

the rollerV Z), a branchcfat vrightvangles to f the longitudinal portion kc and. alongitudiV nal continuation cc'f the branch o', the con-v" tinuation c2 returning towards the end of the roller.

rlhe journal Z for the paper roller is mounted in a housing e and controlled by a spring f. The housing c is axially slidable through an aperture inA the frame g and is secured in one of two different positions by means' of a locking bar z, which engages one or other of the annular grooves h andfz.2 in the housing e. The two grooves z/ and h2 are .provided to enable the mounting to be used for paper rolls of two different widths, say for quarto and folio size.V The journal d carries a plug 7c of the same diameter as the internal diameter of the paper roller b.

.The plug la is provided with three radial projections 7c located to engage the three T shaped slots.

lIn order to insert' the paper roll, the

journal d is first of all moved. outwardlyY by means of a hand grip d in order that the end of the paper roll (not shown) may be fitted on to a fixed or other suitable journal. WhenA the paper roller has been fitted into its correct position, the journal ai is pushed inwardly in order to slide the yplug 7c into the paper roller (Z. The ournal al is then rotated in either direction until the operator can tell by the resistance that the projections 7c have been brought up against the end of the branches c. The journal d I or hand grip d is then released and the spring f automatically returnsl the journal d and plug le, causing theA projections lo toV ride along the longitudinal continuation c2 of the branch c. The paper roll is then absolutely and firmly held in position and Yis not liable to be displaced accidentally by vibration or the like.

`It is not essential that the slots should be T shap'ed'asl shown on the drawing; Thev Slots may 'be'L shaped or in the'form of abayonet joint. The T shaped slot is,-how ever,-fpreferable-as' the operator does not require to hesitate inxthe' rotation of theY journal d, since with the T shaped slot, the journal can be rotated iinleither direction. The

engagement of the proj eotions with the longitudinal continuation-02 of the `slot-under vthe action of the spring f prevents any aceide'nt'al Adisplacement 'of the paper Toll.

Claims: y l: In a copying machine, a paper-support-` ing roller having a hollow end and a plural` ity of bayonet slots therein, each slot opening into the end'of the roller, a plug. adapted to fit into'the said hollow end,'1projections` onsaid plug lfor engaging said slots and an axially spring-controlled'and rotatable support for'said plug.

2. In a copying machine, a paper-support#v ing roller having a: hollowr 4end and a plurali-. ty of slots therein, each'slot being T-shaped',

.ralityof Slots therein,f-eaoh slot consisting of a portion extendinof longitudinally inwardly from the endo "thefrol'ler, afbranch at thef iinner end of and atl` right` angles""to said longitudinal vportion and` al longitudinal continuation'of said branch returningtowards the-end ofthe roller, aplug adapted to fit into the said hollow end, `projections on said plugffor engaging YSaid `slots and an axially Spring-controlled and rotatable sup' port for saidVV plug.

The foregoing Specificationsigned at Co` logne, Germany, this 3rd day ofJanuary';

RICHARD* BERGER; f 

